Mathematics: How to know if a triangle is an equalatirral, isoscles, or obtuse?

⇨Use the cross-multiplication method. Then,..So, the correct value of x is 12 (option C.)_____Hope it helps....

How to know if a triangle is an equalatirral,

NathanChavez4313

15.03.2022

Equilateral: all sides are the same length
isosceles: two sides are the same length
obtuse: there is 1 obtuse angle

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benjamenburton1

15.02.2022

$\boxed{\underline{\bf \: ANSWER}}$ ⇨

$\sf \frac{x}{27} = \frac{4}{9} \\$

Use the cross-multiplication method. Then,..

$\sf \frac{x}{27} = \frac{4}{9} \\ \sf 4 \times 27 = 9x \\ \sf 108 = 9x \\ \sf 108 \div 9 = x \\ \boxed{ \bf \: 12 = x}$

So, the correct value of x is 12 (option C.)

_____

Hope it helps.

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